SOLUTION: the square of a half of a number diminished by twice the number is equal to 5. find the number.

SOLUTION: the square of a half of a number diminished by twice the number is equal to 5. find the number.

Algebra.Com

Question 339771: the square of a half of a number diminished by twice the number is equal to 5. find the number.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
let the number be x

x^2-8x-20=0
x^2-10x+2x-20=0
x(x-10)+2(x-10)=0
(x-10)(x+2)=0
number = 10 OR -2
RELATED QUESTIONS
Two times the square of a number diminished by 98 is equal to zero. What are the number?... (answered by josgarithmetic)

The sum of the digits of a two digit number is 15. One half of a number diminished by 15... (answered by ly12603)

The sum of the digits of a two-digit number is 15. One-half of the number diminished by... (answered by stanbon)

One half the square of a number increased by three timesthe number is equal to 8. Find... (answered by Stitch)

Find two consecutive integers such that twice the smaller number is diminished by twenty... (answered by ReadingBoosters)

twice a number, diminished by 17 is -3 find the... (answered by 2897696)

Find a number such that one half of it's square is equal to twice the number plus... (answered by mananth)

One-half the square of a number is equal to 16 more than twice the number. what is the... (answered by TimothyLamb)

Find the positive number which diminished by 14 is equal to 51 times the reciprocal of... (answered by ptfile)